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Article #15210

Re: Flywheel batteries as EV power source

#15210
From: Bob Blackshaw
Date: Wed, 23 Dec 1992 20:54
36 lines
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In <72196@cup.portal.com> lordSnooty@cup.portal.com (Andrew - Palfreyman) writes:

>I wrote:
>>Re. the exploding flywheel: I was mulling on flash-filling the
>>cavity with thick-setting foam, but I imagine that the response
>>time is way too long compared with the split of the wheel.
>>Comments?

>Lydick:
>: Even if the response time weren't too long, this "foam" would merely be yet
>: another thing for the flywheel fragments to vaporize, and would almost
>: certainly only exacerbate the problem.  Why do so many people have so little
>: grasp of the amount of energy we're talking about, here?

>Arrogant prating becomes you, sweetie. Nice to see a preacher here 'bouts.

>The largest difference, in any case, between the "exploding gasoline"
>scenarios and the broken flywheel is not the energy but the instantaneous
>power - probably between 8 and 10 orders, depending.

>The energy dissipation within the volume of the container tends to zero
>for a vacuum; most of it occurs at the container walls. If one could
>spread out the volume of energy dissipation, the chances of containment
>are concomitantly higher. Despite this fact, I don't *really* think foam
>is going to do it.
> --------------------------------------------------------------------------
>| lord snooty @the giant |  Would You Like Space Potatoes With That?       |
>| poisoned electric head |              andrew_-_palfreyman@cup.portal.com |
> --------------------------------------------------------------------------

If it is any help, the last issue of IEEE Spectrum was all about EVs. As
I recall, there was an article on batteries which discussed work in
progress on flywheel batteries. It might help the discussion to look
it up.

Bob
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Path: arc1-ca.pugleaf.net!sparky!uunet!paladin.american.edu!darwin.sura.net!cos!cos!bob1
References: <1992Dec13.114534.961@cmkrnl.com> <1992Dec15.004956.465@mtu.edu> <1992Dec15.194558.2556@adobe.com>, <1992Dec16.192456.6261@news.cs.brandeis.edu> <1goebdINNik@gap.caltech.edu>,<1992Dec17.035214.15058@u.washington.edu> <1gov35INNik@gap.caltech.edu> <1992Dec17.170002.28389@u.washington.edu> <1h2vvbINNfm0@gap.caltech.edu> <72196@cup.portal.com>

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Newsgroups: sci.electronics,sci.energy,rec.autos.tech
Path: arc1-ca.pugleaf.net!sparky!uunet!paladin.american.edu!darwin.sura.net!cos!cos!bob1
From: bob1@cos.com (Bob Blackshaw)
Subject: Re: Flywheel batteries as EV power source
Message-ID: <bob1.725144045@cos>
Organization: Corporation for Open Systems
References: <1992Dec13.114534.961@cmkrnl.com>    <1992Dec15.004956.465@mtu.edu>  <1992Dec15.194558.2556@adobe.com>,   <1992Dec16.192456.6261@news.cs.brandeis.edu>    <1goebdINNik@gap.caltech.edu>,<1992Dec17.035214.15058@u.washington.edu>    <1gov35INNik@gap.caltech.edu> <1992Dec17.170002.28389@u.washington.edu>   <1h2vvbINNfm0@gap.caltech.edu> <72196@cup.portal.com>
Date: Wed, 23 Dec 1992 20:54:05 GMT
Lines: 36